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Finding the Fourth Proportional to 362,474.20, 543,055.20 and 309,986.20

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Solution

The fourth proportional to 362,474.20, 543,055.20 and 309,986.20 is: 464,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,474.20 : 543,055.20 = 309,986.20 : x
  2. Step 2: Convert to fraction form
    362,474.20/543,055.20 = 309,986.20/x
  3. Step 3: Cross multiply
    362,474.20x = 543,055.20 × 309,986.20
  4. Step 4: Simplify right side
    362,474.20x = 168,339,617,838.24
  5. Step 5: Solve for x
    x = 168,339,617,838.24/362,474.20
  6. Step 6: Final answer
    x = 464,418.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.